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A novel blockchain consensus mechanism leveraging quantum sampling to replace classical proof-of-work with a more energy-efficient and secure alternative.
his paper proposes a quantum Proof-of-Work (PoW) scheme based on coarse-grained boson sampling (CGBS). Instead of solving classical hash puzzles, miners generate quantum samples tied to block data and submit them for validation. The protocol introduces incentive mechanisms (rewards + penalties) that create a Nash equilibrium favoring honest participation. Crucially, the sampling tasks are computationally hard to simulate classically, making spoofing difficult without prior knowledge of validation parameters. The approach promises significant speed and energy efficiency gains compared to traditional PoW systems.